решите уравнение
а) 1 ЦЕЛАЯ 3/4 : 3,75=4X : 15
б) 1/2 : 13= 1/3X : 4 ЦЕЛЫЕ 1/3
а) 1 ЦЕЛАЯ 3/4 : 3,75=4X : 15
б) 1/2 : 13= 1/3X : 4 ЦЕЛЫЕ 1/3
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А) 1 3/4:3,75= 4х:154х:15= 7/15
4х= 7/15*15
4х= 7
х= 7:4
х= 1,75
б) 1/2:13= 1/3х:4 1/3
1/26= 1/3х:4 1/3
1/3х= 4 1/3*1/26
1/3х= 1/6
х= 1/6:1/3
х= 1/2